Have you ever felt sad, blue, or down? Are you currently not experiencing depression? McLean Hospital researchers seek volunteers to understand the role of hormones and GABA, a molecule in the brain, in stress and emotions. The study includes two sessions. If eligible to participate, you can receive up to $400.We are seeking right-handed individuals, 18-25 years old, with no past psychiatric or neurological illness other than depression to participate in 2 study sessions, for a total of up to 9.5 hours. Individuals who are currently taking psychotropic medications will not be eligible. During the study you will be interviewed by a psychologist, have an MRI exam, provide blood and saliva samples, play a computer game, and fill out questionnaires.If you are interested in participating, please complete the following screening survey: http://mcleanstudy.org. If you would rather speak on the phone, you can email Sarah at email@example.com. Please include your phone number and some good times to reach you, and researchers will contact you to conduct a preliminary phone screen and to provide more information about the study.